Thursday, January 22, 2015

Decimals

Fractions and Decimals
 Great visual!  HTU = Hundreds, Tens, Units (Ones) . t = tenths.  
We'll continue with h for hundredths.

This week, students have been learning to represent parts of a whole as decimals.  Fourth grade problem-solvers will:
  • Use decimal notation for fractions with denominators of 10 or 100.  For example, rewrite 0.62 as 62/100; describe a length as 0.62 meters; locate 0.62 on a number line diagram.
  • Compare two decimals to hundredths by reasoning about their size.  Recognize that comparisons are valid only when two decimals refer to the same whole.  Record the results of comparisons with the symbols >, =, <, and justify conclusions, e.g., by using a visual model.

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